Knob attachment.



No. 707,375. Patented Aug. i9, |902.

w. s. BARTHoLomEw.

KNOB ATTACHMENT.

(Application tiled Apr. 16, 1902A- qlomndel.)

lj' i. y?? j. '1; l III II/ l JJ 5% 2J i l v\ NTTED STATES PATENTOFFICE.

l. WILLIAM S. BARTHOLOMEVV, OF WYNOOTE, PENNSYLVANIA, ASSIGNOR TO THEADAMS du WESTLAKE COMPANY, OF ILLINOIS.

KNOB ATTACHMENT.

sPnCrFIcATIon arming pare of Letters PaeeneNo'.' 707,375, dated August1e, 1902. Application led-April 16, 1902. Serial No. 103.194,4 (Nomodel.)

To all whom it u'tctyoucerrt: Be it known that L'WIL'LIAM S.BAR'ITIIOLO- MEW, a citizen of thevUnited States, residing i `thirnbleconsisting of a circular flange h, threadedto screw into av depression Gand vhaving'a reduced body h, also threaded.

at Wyncote, in the county of Montgomery and State of Pennsylvania, haveinvented certain new and usefullmprovements inDoor-Knob Attachments, ofwhich the following is a speciication, reference being had to theaccompanying drawings, forming part thereof. A

My invention relates to a door-knob attachment wherein the knobs foroperating the latch may be applied thereto irrespective of the thicknessof the door with which it is used. The object of my improvement is toproduce a deviceof `simple construction andI ready application to adoorand the likeby l means of which'the knobs or handles may be secured tothe frame of,` a mortis'e lock or latch by adjustable members 'soarranged that regardless of the thickness ofthe dooror its mountingswithin certain limits the knobs may be fastened in place. Y f

Referring to the'd'rawings, Figure lis a sectional View through part ofa door andthe upper end of a mortise-lock, showing my invention appliedto a door of extreme thickness. Fig. 2 is a similar View, the door`being of decreased thickness. perspective views of opposite sides of apart of the cover-plate. Fig. 5 is a perspective View showing the knoband rose connected.

- Fig. 6 is a similar View of a detail of construction. Fig. 7 shows amodication.

Similarfletters of reference indicate similar parts inA-the respectiveiigures.

Into the edgeofa door A is mortised a lock,

the frame of which'consists of the casing B and cover-.plate C. Throughthe upper part of the lock and also through the door A pro;

jects a spindle -D for operating the latch or latch-plate E through themedium of the hub or stump F in the ordinary way. Depressions G,concentric with the axis of the spindle D, are formed in the casingB andcover-A asshown in Fig. 2.

Figs. 3 and 4 areA `the and latch-plate E, operated by said arms. Y' j HH, Figs'l', 2, and 6, are vthimbles, each Through each thirnble H is anopening of two diameters, the larger opening h2 fitting freely aroundthe iiange g' in the depression G when the parts are assembled, whilethe smaller opening h3 is large enough to permit the' thimble toberotated around the square spindle .D. Notches h4 are made in thethimbles, adapted toqreceive a suitable tool for rotating them.` Y 1 I Iindicate roses,lin this instance of circular forni, from the externalsurface of each of'which projects a neck I. A cylindrical "extension-I2is 'for'rned integrally with each roseon its innerside, in whichextension is a bore z', threaded to engage the body h. The

'diameter of the extension I2 is the same as :that ofthe Hange hof thethimble H, the extension having cut thereon athread of similar pitchthat it may enter the depression G, Y A sleeve J, flanged atj, passesthrough and beyond an axial opening inthe rose I and neck I", a knob Kbeing iixedto the projecting portion of the sleeve. In assembling theseparts the sleeve. .I is passed through the rose I until the iiangejValouts against thev shoulder t2 at the base of the bore t.

The knob K, having been put on the projecting end of the sleeve andmoved inwardly until it reaches the neck I', apin, screw, or otherfastening is employed to secure the knob in position. A square holeextends through the sleeve J, through which the Asquare spindle D mayslide independently` in an axial direction.

In practice a hole is bored through the door of a size sufficient toadmit the cylindrical extensions I2, and the lock is lnortised in asusual. The thmbles H are then inserted in the circular opening and theirflanges h screwed into the depressions G. AroseI then follows on eachside of thedoor, lthe cylindrical extensions I2 of said roses enteringthe circular opening .at yopposite ends, and on turning each rose thethreaded bore t will engage the threaded body portion of the thin1- bleH on its side of the door. Continued r0- tation of the roses will causethem to bear firmly against the respective sides of the door. A screw L,passed through a hole in each rose and into the door, prevents backwardrotation of the rose. The spindle D may be inserted in the lockimmediately after placing it in the door or before the last rose is putin place.

From Figs. l and 2 it will be seen that Whatever the thickness of doorwithin certain normal limits no difficulty will beexperiencedinattachingmyimprovement. Should the door be thin, as in Fig.2, the extensions I2 will follow the thimbles H into the depressions G.In athick door if only a few threads ot' each part are engagedl theknobs will be sufciently held.

An important feature of my invention consists in the application of thethimble H between the rose and the lock. By its use a double telescopicjoint is produced, giving a wider range of adjustment than would bepossible if the extensions I2 were screwed directly int-o the lock.

Vhere but one knob is required, the hole for the projection I2 is madein one side of the door only and a plug H', similar to the one seen inFig. 7, substituted for the thimble H in the unused depression G.

It is to be understood that the word rose found in t-he claims isintended to cover any means for rotating the cylindrical eXtension I2.

I do not restrict myself to the exact details of construction,combination, and arrangement herein set forth, it being obvious thatminor variations thereof not involving the exercise of invention may bemade by the skilled mechanic, and such departures from what is hereindescribed and claimed not involving invention I consider as within thescope and terms of my claims.

Having thus described my invention, I claim- 1. In combination, alock-casing having a threaded depression in its side, a rose providedwith an integral extension having a threaded bore and adapted undercertain conditions to enter said depression in the lockcasing, and athreaded thimble connecting said depression with said extension,substantially as set forth.

2. In combination, a lock-casing provided with a threaded depression inits side, a rose having an inwardly-projecting cylindrical extensionwith a threaded bore and being also circumferentially threaded to adaptsaid eX- tension to engage under certain conditions the said threadeddepression, and a threaded thimble connecting said depression With saidextension, substantially as set forth.

3. In combination, a lock-casing having a threaded depression in itsside, a cylindrical extension projecting inwardly from a rose, having athreaded bore and being circumferentially threaded, and a threadedthimble of greater diameter at one end than at the other, and adapted toconnect said depression with said cylindrical extension, substantiallyas set forth.

4. In combination, a lock-casing having a threaded depression in itsside, a rose provided with an extension having a threaded bore, athimble having two diameters for connecting said casing with saidextension, a sleeve passing through the rose and adapted to rotatetherein, and a knob or handle secured to the sleeve, substantially asset forth.

5. In combination, a lock-casing having a threaded depression in itsside, a rose having a cylindrical extension projecting inwardly andprovided with a threaded bore, a thimble, having a greater diameter atone end than at the other, vfor connecting the casing with the rose, apolygonally-bored sleeve passing through the rose and adapted to rotatetherein, a knob or handle secured to the sleeve, and a spindle,polygonal in cross-section, adapted to slide in the sleeve,substantially as set forth.

6. In combination with a lock-casing and its cover-plate, each having athreaded depression Gr formed with a flanged axial opening g, a hub orstump for operating a latch, said hub being journaled in the flangedopenings g, substantially as set forth.

7. In combination in a lock, a casing and its cover-plate, each having athreaded depression formed therein, two thimbles, each being of greaterdiameter at one end than the other and adapted to engage each with oneof said depressions, a rose on each side of the lock provided with acylindrical extension having a threaded bore to engage the thimble onthe same side of the lock, a sleeve passing through each rose andadapted to rotate therein, a knob or handle secured to each sleeve, anda polygonal spindle adapted to slide in a similarly-shaped bore in eachsleeve, substantially as set forth.

In testimony whereof I hereunto set my hand and seal.

WILLIAM S. BARTIIOLOMEW.

- Witnesses:

B. L. COMPTON, E. H. STEARNS.

[In S-l IOO IIC

